Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 72 for “"braces"”.
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High-performance braces for seismic design
… structures. "High-performance braces," as this thesis calls them, are new and improved bracing systems that combine the economy and stiffness of a concentrically braced frame with the ductility and energy dissipating capacity of a moment resisting frame. This thesis analyzes and …
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The effect of prophylactic ankle braces on postural sway
Ankle braces are commonly used in an attempt to decrease the risk of injury during sport. Despite the widespread use of ankle braces, their efficacy of use for uninjured ankles is questionable. The purpose of this study was to investigate the effects of a prophylactic ankle brace on postural sway, …
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The effect of prophylactic knee braces on running gait
The use of prophylactic knee braces to prevent knee injuries in football players might increase the risk of injuries to the players because of changes in normal function. This study focused on one of seven criteria for knee braces developed by the American Academy of Orthopedic Surgeons, namely …
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Exploring the Effect of Ankle Braces on Foot Posture
… this study, which evaluated the effects of ankle braces on plantar loading patterns in individuals with different foot postures. Contact area, peak force, force-time integral, and center of pressure were evaluated during a walk, run, and cut while the participant was unbraced, wearing a lace-up …
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The effect of protective knee braces on agility and muscle performance
… to examine the effect of protective knee braces on agility and selected isokinetic strength, power, and endurance measures. Each subject performed the Semo agility test in each of three experimental conditions: braced with the Anderson knee stabler (B,An); braced with the Arco knee guard …
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Development and experimental validation of self-centering buckling-restrained braces with shape memory alloy
… of self-centering buckling-restrained braces (SC-BRBs) using shape memory alloys (SMAs) is investigated. The SC-BRBs consist of a typical BRB component, which provides energy dissipation, and pre-tensioned superelastic NiTi shape memory alloy rods, which provide self-centering. The SMA …
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Nonlinear Finite Element Modelling of Reinforced Concrete Frames Retrofitted with Shape Memory Alloy Buckling Restrained Braces
… investigate the benefits of Buckling-Restrained Braces (BRBs) as a retrofit technique for accommodating seismic demands in seismically deficient reinforced concrete frames, the dominant structural system of pre-1970s construction. The efficiency of Superelastic-Shape Memory Alloys (SE-SMA) as the …
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A systematic review: The effect of prophylactic braces on reducing risk factors related to ACL injury in athletes
… proprioceptive data were assessed. The custom braces led to greater improvements in mechanisms of injury than the generic counterparts. The other category, type, saw the hinged braces perform better with most kinematic and proprioceptive variables. The primary exception was knee flexion which …
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The Effects of Wearing Prophylatic Knee Sleeves/Braces on Selected Isokinetic Measures During a Velocity Spectrum Knee Extension Test
… the effects of wearing prophylatic knee sleeves/ braces on selected isokinetic measures (i.e. strength, power and endurance). Each subject performed the Biodex (Multi-Joint System 2AP) knee extension test in each of three experimental conditions: sleeved with the Don Joy Knee support (S-DJ); …
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Effects of prophylactic lace-up ankle braces on kinetics and kinematics of the lower extremity during a state of fatigue.
Prophylactic lace-up braces are commonly used on athletes regardless of ankle injury history to reduce lateral ankle sprains (LAS). However, their ability to limit ankle sagittal range of motion has the potential to alter knee kinematics and is linked to chronic knee pathologies. Thirteen …
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Nonlinear Dynamic Analysis of Structures with Hyperelastic Devices
… as a seismic protection device. Hyperelastic braces incorporate a new idea of a nonlinear elastic material that gains stiffness as the brace deforms. Structural behaviors of particular concern for an MDOF frame are stability, residual displacement, base shear, and dispersion. The structure is …
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Behavior of three-span braced columns with equal and unequal spans
Columns with three spans separated by elastic braces are analyzed. The influences of translational and rotational resistance at the braces, various end conditions, and the bracing locations for the perfect columns with equal and unequal spans subjected to uniform and nonuniform axial load are …
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Exploring the Effects of a Non-mechanical Knee Brace on Lower Limb Kinematics & Kinetics in Healthy Individuals & its Implications for Patients with Osteoarthritis of the Knee
… Although effective biomechanically, mechanical braces can be unattractive to patients. Controlling symptomology by altering neuromuscular control with the use of non-mechanical (proprioceptive) knee braces could improve the treatment of OA. Aim: to examine the effect of a proprioceptive knee …
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Identification of Physical Changes to a Steel Frame
… of mass to its roof, and the addition of braces along one of its sides. FVT was used again to determine the natural frequencies, mode shapes, and damping ratios of the newly changed structure. An ETABS computer model was developed to represent the frame. This baseline model produced …
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Structural Damage Detection Utilizing Experimental Mode Shapes
… construction of a test structure, with three braces that can be repeatedly engaged or dis-engaged, thus allowing for testing of a variety of braced configurations. For this thesis, damage is assumed to cause a change in stiffness. Experimental testing is conducted to acquire mode shapes and …
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Experimental and Analytical Investigation of the Dynamic Response of Lightly Reinforced Concrete Frames and Viscoelastic Dampers
… with and without viscoelastic-damped braces and their results were compared with those from the experiments. The VE dampers were found to be effective in improving the response of the lightly reinforced concrete frames.
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Refined design expressions for in-plane girder stiffness and system buckling capacity
… lateral-torsional buckling (buckling between braces points) when the girder system is long and narrow. One of the primary contributors to global buckling resistance is the in-plane girder stiffness of the system. There is, currently, a published expression for the in-plane girder stiffness; …
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Evaluation of two RC buildings retrofit with steel bracing
… buildings were similar in that diagonal steel braces and RC infill walls were used to stiffen and strengthen the existing frames. The schemes were different in that one had steel bracing in the interior of the building while the other had steel bracing on the exterior of the building.
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Seismic strengthening by providing structural diaphragm
… cantilever columns, and to the vertical diagonal braces on the periphery, thus the seismic performance can be enhanced. An analysis method is also developed for the rehabilitation design.
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